Direct observation of hydrodynamic instabilities in driven non-uniform colloidal dispersions

Details Direct observation of hydrodynamic instabilities in driven non-uniform colloidal dispersions Direct observation of hydrodynamic instabilities in driven non-uniform colloidal dispersions

2008-10-07

arxiv.org/abs/0810.1258v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures, submitted to Phys. Rev. Lett., movies available at http://www2.thphy.uni-duesseldorf.de/~adam/

Scientific paper

A Rayleigh-Taylor-like instability of a dense colloidal layer under gravity in a capillary of microfluidic dimensions is considered. We access all relevant lengthscales with particle-level microscopy and computer simulations which incorporate long-range hydrodynamic interactions between the particles. By tuning the gravitational driving force, we reveal a mechanism whose growth is connected to the fluctuations of specific wavelengths, non-linear pattern formation and subsequent diffusion-dominated relaxation. Our linear stability theory captures the initial regime and thus predicts mixing conditions, with important implications for fields ranging from biology to nanotechnology.

Affiliated with

Also associated with

No associations

Rating

Direct observation of hydrodynamic instabilities in driven non-uniform colloidal dispersions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Direct observation of hydrodynamic instabilities in driven non-uniform colloidal dispersions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct observation of hydrodynamic instabilities in driven non-uniform colloidal dispersions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-558098